What is the low beam headlight bulb size for a 1986 Isuzu I-Mark?

The 1986 Isuzu I-Mark uses a 6052 LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1986 Isuzu I-Mark?

The high beam bulb size for the 1986 Isuzu I-Mark is 6052 LED.

Why are my 1986 Isuzu I-Mark headlights dim?

Dim headlights on a 1986 Isuzu I-Mark can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 6052 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1986 Isuzu I-Mark fog light?

The 1986 Isuzu I-Mark uses a LED Fog Light bulb for the fog light position.

Is the 1986 Isuzu I-Mark single or dual beam?

The 1986 Isuzu I-Mark uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

Can I install LED bulbs on my 1986 Isuzu I-Mark?

Yes, the 1986 Isuzu I-Mark comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 6052 LED LED conversion kit for the low beams.

Does the 1986 Isuzu I-Mark have fog lights?

Yes, the 1986 Isuzu I-Mark takes a LED Fog Light bulb for the fog light position.

How do I change the headlight on a 1986 Isuzu I-Mark?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old 6052 LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 1986 Isuzu I-Mark?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved 6052 LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 1986 Isuzu I-Mark headlights?

A pair of halogen 6052 LED bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 1986 Isuzu I-Mark?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the 6052 LED position are available as direct plug-and-play replacements.

This vehicle is part of the 1985–1986 Isuzu I-Mark generation. All models in this range share identical light bulb sizes.

Fitment Guaranteed for 1986 Isuzu I-Mark

What Size Bulbs Does a 1986 Isuzu I-Mark Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 1986 Isuzu I-Mark Have?

When it comes to nighttime visibility, the 1986 Isuzu I-Mark relies on an arrangement of 12 specialized bulbs. It features an extensive lighting system powered by a halogen-based setup where a single 6052 LED dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the mid years of the I-Mark's 1982-1990 production span.

Can You Put LED Bulbs in a 1986 Isuzu I-Mark?

Upgrading to LED is one of the most effective ways to modernize your Isuzu's appearance and safety profile. Since your I-Mark uses a single 6052 LED bulb for both high and low beams, ensure your chosen LED kit is "dual-beam" compatible. This allows the LED circuitry to mimic the two-filament design of the original halogen bulb. Don't forget the LED Fog Light fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

1986 Isuzu I-Mark Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	6052 LED	Buy 6052 LED →
High Beam	6052 LED	Buy 6052 LED →
Fog Light	LED Fog Light	Buy LED Fog Light →
Brake Light	Brake Light Assembly	Buy Brake Light Assembly →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	1073 LED	Buy 1073 LED →
Turn Signal Rear	1073 LED	Buy 1073 LED →
Reverse Light	1073	Buy 1073 →
Dome Light	DE3175	Buy DE3175 →
License Plate	89 or 194	Buy 89 or 194 →
Parking Light	89	Buy 89 →
Trunk Light	DE3175	Buy DE3175 →